CN2935084Y - Central processor for photoelectric centering rectification and detecting apparatus - Google Patents

Abstract

The utility model discloses a central processor used for photoelectric alignment correction detection device, which consists of an SCM U1, an A/D convertor U2, a nixie tube display unit and an alarming unit. The A/D convertor U2 receives compensation signal f<0> output by a compensation circuit, DC signal f<1> of way A output by a way A signal processing unit and DC signal f<2> of way B output by a way B signal processing unit, and converts the information from the three ways into digital information, and outputs the digital information to SCM U1; SCM U1 calculates offset f<3> after receiving the above digital information to get offset f<3> that a ribbon after getting compensation deviates from center or edge. The central processor disclosed by the utility model eliminates disturbance of ambient dust on a ribbon center and edge position detection device in the circumstance of long-term work, and influence of aging of illuminants on the detection device, and reduces field maintenance frequency.

Description

A kind of center processor that is used for photo-electric centering correction pick-up unit

Technical field

The utility model relates to a kind for the treatment of apparatus, more particularly says, is meant a kind of center processor that is applicable to that nontransparent band can automatic centering correction pick-up unit during sideslip in motion process.

Background technology

For band center and peripheral position detecting device, it uses comparatively general main have photo-electric, inductance type and condenser type, and wherein, photo-electric has the position detecting device of CCD formula, the position detecting device of infrared light formula.They respectively have relative merits.The precision height of CCD formula position detecting device, anti-extraneous veiling glare interference performance is poor, easily saturated; The position detecting device of infrared light formula adopts the infraluminescence pipe, and light-emitting area is little, be subject to dust and disturb, and precision is low; The inductive position pick-up unit can only be used for magnetic band production line, and range of application is narrow; The capacitive position pick-up unit is subject to electrostatic interference and is difficult to use under the rugged surroundings at the scene, is easy to generate misoperation, brings very burden to produced on-site.

The positional deviation correction pick-up unit that existing photo-electric is used for band comprises devices compositions such as signal processing circuit, controller and light source, signal processing circuit to the light signal that receives amplify, isolation filter exports to controller after handling, controller carries out calculation process output control signal to the signal that receives and carries out deviation rectification of strip for the electric current servo-valve to regulate.

At present, the center processor that is used for photo-electric centering correction pick-up unit is general only to be handled the correction information of signal processing circuit output, can't the side-play amount that produce be compensated; Control signal precision because of its output is not high again, easily causes the generation of band false information in motion process, makes troubles to produced on-site.

Summary of the invention

The purpose of this utility model provides a kind of center processor that is used for photo-electric centering correction pick-up unit, this center processor is by the respectively processing of programmed control realization to two-way information, thereby obtain the side-play amount of band in motion process, and side-play amount compensated handle back output precision offset amount information and give controller, thereby realized the centering correction of accurate control band.

The utility model is a kind of center processor that is used for photo-electric centering correction pick-up unit, described center processor is made up of single-chip microcomputer U1, A/D converter U2, charactron display unit and alarm unit, and A/D converter U2 receives the compensating signal f of described compensating circuit output ₀And receive the A road direct current signal f of described A road signal processing unit output ₁And receive the B road direct current signal f of described B road signal processing unit output ₂, and three tunnel information translation that will receive are that numerical information is exported to single-chip microcomputer U1; Single-chip microcomputer U1 receives the laggard line displacement amount of above-mentioned digital signal and calculates, the band off center after obtaining to compensate or the side-play amount f at edge ₃

The single-chip microcomputer U1 of described center processor at first reads B road direct current signal f ₂, and whether be that 0 value is judged to it; Read A road direct current signal f again ₁With read compensating signal f ₀Then according to 2 times A road direct current signal f ₁With B road direct current signal f ₂Difference obtains offset voltage signal V=2LR, then has $L=\frac{V}{2R};$ Use described compensating signal f then ₀Compensate the side-play amount L at described band off center or edge, the band off center after being compensated or the side-play amount f at edge ₃At last to the band off center after the compensation or the side-play amount f at edge ₃Carry out threshold value less than 1 judgement.

The advantage that the utility model is used for the center processor of photo-electric centering correction pick-up unit is: the interference that (1) adopts the software control pattern to solve band center and peripheral position detecting device extraneous dust under the long-term work situation; (2) solved under the long-term work situation, light source ages has reduced the field maintemance number of times to the influence of pick-up unit; (3) be embedded in Control Software at single-chip microcomputer, reduced production cost effectively.

Description of drawings

Fig. 1 is the structured flowchart of photo-electric centering correction pick-up unit.

Fig. 2 is the information processing control flow chart of controller.

Fig. 3 is the circuit structure diagram of controller.

Among the figure: 1. variable-frequency power sources 2. fluorescent lights 3. camera lens A 4. photoelectric commutator A5. signal processor A 6. compensating circuits 7. center processors 8. controllers 9. electric current servo-valves 10. hydraulic cylinders 11. bands 13. camera lens B 14. photoelectric commutator B 15. signal processor B

Embodiment

The utility model is described in further detail below in conjunction with drawings and Examples.

See also shown in Figure 1, photo-electric centering correction pick-up unit generally is made up of variable-frequency power sources 1, fluorescent light 2, camera lens A3, camera lens B13, photoelectric commutator A4, photoelectric commutator B14, signal processing circuit A5, signal processing circuit B15, compensating circuit 6 and controller 7, and described camera lens A3, photoelectric commutator A4 and signal processor A5 constitute A road signal processing unit; Described camera lens B13, photoelectric commutator B14 and signal processor B15 constitute B road signal processing unit; Variable-frequency power sources 1 gives fluorescent light 2 power supplies, and fluorescent light 2 sends 3000Hz～4000Hz light wave, and A road signal processing unit and B road signal processing unit are gathered described lightwave signal simultaneously; The camera lens A3 of A road signal processing unit exports to photoelectric commutator A4 with the lightwave signal that collects behind imaging optically focused, after photoelectric commutator A4 handles, obtain 3000Hz～4000Hz electric signal and export to signal processor A5, output A road direct current signal f after signal processor A5 exchanges amplification, bandpass filtering, rectification, low-pass filtering, direct current amplification ₁Give compensating circuit 6 and controller 7; The camera lens B13 of B road signal processing unit exports to photoelectric commutator B14 with the lightwave signal that collects behind imaging optically focused, after photoelectric commutator B14 handles, obtain 3000Hz～4000Hz electric signal and export to signal processor B15, output B road direct current signal f after signal processor B15 exchanges amplification, bandpass filtering, rectification, low-pass filtering, direct current amplification ₂Give compensating circuit 6 and center processor 7; The A road direct current signal f of 6 pairs of receptions of compensating circuit ₁With B road direct current signal f ₂, and carry out difference with setting value and compare, as B road direct current signal f ₂During less than setting value, to A road direct current signal f ₁With B road direct current signal f ₂Compensate back output compensating signal f ₀Give center processor 7; The compensating signal f of 7 pairs of receptions of center processor ₀, A road direct current signal f ₁With B road direct current signal f ₂Carry out obtaining the side-play amount f of band 11 after the computing compensation with respect to center or edge ₃Give controller 8, by controller 8 control electrohydraulic servo valves 9, driving hydraulic cylinder 10 drives the correction rollers and does the corresponding motion of rectifying a deviation, and adjusts band 11 and gets back to the precalculated position, thereby realize the automatic centering correction.

See also shown in Figure 2ly, in the utility model, center processor 7 is made up of single-chip microcomputer U1, A/D converter U2, charactron display unit and alarm unit,

A/D converter U2 receives the compensating signal f of described compensating circuit 6 outputs ₀And

Receive the A road direct current signal f of described A road signal processing unit output ₁And

Receive the B road direct current signal f of described B road signal processing unit output ₂,

And three tunnel information translation that will receive are that numerical information is exported to single-chip microcomputer U1;

Single-chip microcomputer U1 to the information processing flow process is:

Step 71: boot system initialization;

Step 72: read B road direct current signal f ₂

Step 73: judge B road direct current signal f ₂Whether be 0; When being " 0 ", output alarm information; Enter next step during not for " 0 ";

Step 74: read A road direct current signal f ₁

Step 75: read compensating signal f ₀

Step 76: calculate side-play amount, according to 2 times A road direct current signal f ₁With B road direct current signal f ₂Difference obtains offset voltage signal V=2LR, and L represents the side-play amount at band off center or edge, and R represents that side-play amount L is converted to the transformation ratio of offset voltage signal V, then has $L=\frac{V}{2R};$

Step 77: with described compensating signal f ₀Compensate the side-play amount L at described band off center or edge, the band off center after being compensated or the side-play amount f at edge ₃

Step 78: the band off center after the demonstration compensation or the side-play amount f at edge ₃

Step 79: to the band off center after the compensation or the side-play amount f at edge ₃Carry out threshold value less than 1 judgement, when " less than 1 ", system carries out pickoff signals again, execution in step 72; Do not export to controller 8 when " less than 1 ", finish the software control flow process of center processor 7.

See also shown in Figure 3ly, in the utility model, the connection of center processor 7 is as described below:

The 10th pin of single-chip microcomputer U1 connects with A/D converter U2,

The 21-28 pin of single-chip microcomputer U1 connects with controller 8 respectively, realizes data information transfer,

The 36-39 pin of single-chip microcomputer U1 connects with the data terminal of charactron display unit respectively,

The 32-35 pin of single-chip microcomputer U1 connects with the control end of charactron display unit respectively,

The 1st pin of single-chip microcomputer U1 connects with alarm unit,

The 31st pin of single-chip microcomputer U1 connects+5V,

The 18th, 19 pin of single-chip microcomputer U1 connect crystal oscillating circuit,

The 9th pin of single-chip microcomputer U1 and+be connected to capacitor C 3 between the 5V power supply,

Be connected to resistance R 1 between the 9th pin of single-chip microcomputer U1 and the ground.

In the utility model, single-chip microcomputer U1 chooses the 89S52 chip, and A/D converter U2 chooses the AD7707 chip, chooses similar chip for the circuit structure of center processor 7 and all belongs to and quote the utility model patent thought, is the category of the utility model patent protection.

Claims (3)

1, a kind of center processor that is used for photo-electric centering correction pick-up unit, photo-electric centering correction pick-up unit comprises variable-frequency power sources (1), fluorescent light (2), camera lens A (3), camera lens B (13), photoelectric commutator A (4), photoelectric commutator B (14), signal processing circuit A (5), signal processing circuit B (15), compensating circuit (6) and center processor (7) composition

Described camera lens A (3), photoelectric commutator A (4) and signal processor A (5) constitute A road signal processing unit;

Described camera lens B (13), photoelectric commutator B (14) and signal processor B (15) constitute B road signal processing unit; It is characterized in that:

Described center processor (7) is made up of single-chip microcomputer U1, A/D converter U2, charactron display unit and alarm unit, and A/D converter U2 receives the compensating signal f of described compensating circuit (6) output ₀And

Receive the A road direct current signal f of described A road signal processing unit output ₁And

Receive the B road direct current signal f of described B road signal processing unit output ₂,

And three tunnel information translation that will receive are that numerical information is exported to single-chip microcomputer U1;

Single-chip microcomputer U1 at first reads B road direct current signal f ₂Step (72), and whether be 0 value judgment processing steps (73) to it; Read A road direct current signal f again ₁Step (74) and read compensating signal f ₀Step (75); Then according to 2 times A road direct current signal f ₁With B road direct current signal f ₂Difference obtains offset voltage signal V=2LR step (76), and L represents the side-play amount at band off center or edge, and R represents that side-play amount L is converted to the transformation ratio of offset voltage signal V, then has $L=\frac{V}{2R};$ Use described compensating signal f then ₀Compensate the side-play amount L at described band off center or edge, the band off center after being compensated or the side-play amount f at edge ₃Treatment step (77); At last to the band off center after the compensation or the side-play amount f at edge ₃Carry out threshold value less than 1 determining step (79).

2, center processor according to claim 1 is characterized in that: described single-chip microcomputer U1 chooses the 89S52 chip, and A/D converter U2 chooses chip.

3, center processor according to claim 1, it is characterized in that: the connection of each pin of described single-chip microcomputer U1 is: the 10th pin of single-chip microcomputer U1 connects with A/D converter U2, the 21-28 pin of single-chip microcomputer U1 connects with controller 8 respectively, the 36-39 pin of single-chip microcomputer U1 connects with the data terminal of charactron display unit respectively, the 32-35 pin of single-chip microcomputer U1 connects with the control end of charactron display unit respectively, the 1st pin of single-chip microcomputer U1 connects with alarm unit, the 31st pin of single-chip microcomputer U1 connects+5V, the 18th of single-chip microcomputer U1,19 pin connect crystal oscillating circuit, the 9th pin of single-chip microcomputer U1 and+be connected to capacitor C 3 between the 5V power supply, be connected to resistance R 1 between the 9th pin of single-chip microcomputer U1 and the ground.

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